The James Webb Space Telescope has captured a mid-infrared picture of Sagittarius A*, filling in a long-standing gap in ...
Active galactic nuclei are supermassive black holes at the center of certain galaxies. As matter falls into these black holes ...
Scientists have detected emanating from the nucleus of a galaxy relatively close to our Milky Way flashes of X-rays gradually ...
Black holes themselves emit no light, but the supermassive black holes at the centers of galaxies are often surrounded by ...
Issues delivered straight to your door "I expect Gaia's best results are still to come." ...